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Astronauts Throw Trash Into Space

MattSparkes writes "The International Space Station is home to an increasing amount of unwanted goods, and NASA has just approved a policy where these could be thrown out of the door into space. 'Tools and other gear have accidentally floated away during spacewalks. But NASA has shied away from intentionally jettisoning gear off the ISS in the past because of the threat of space junk hitting the station or other spacecraft.' The loosening of the rules on this comes just as Russian cosmonaut Mikhail Tyurin is about to take a space walk where he will hit a golf ball from the ISS in a promotional stunt for a golf company."

138 comments

  1. Pigs in space by BadAnalogyGuy · · Score: 5, Funny

    It starts with a piece of trash and quickly turns into a terrible neighborhood. Next thing you know, it'll be the International Space Crackhouse.

    I told you we shouldn't have let those Russians in.

    1. Re:Pigs in space by MattSparkes · · Score: 2, Insightful

      The Russians are playing nice in space, it's all golf for them. It's the Americans who'll be throwing trash around!

    2. Re:Pigs in space by BigBuckHunter · · Score: 1

      Next thing you know, it'll be the International Space Crackhouse.

      Since there's an IHOP within 3 blocks of every crackhouse that I know of, this is really a blessing in disguise.
      BBH

    3. Re:Pigs in space by Sporkinum · · Score: 4, Funny

      International Space Crackhouse.

      Ground control to Major Tom....

      --
      "He's lost in a 'floyd hole"
    4. Re:Pigs in space by fbjon · · Score: 1
      I prefer having some papers blow into my windshield rather than golfballs at orbital speed, thank you.


      Says Mikhail Tyurin: "Fore!"

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    5. Re:Pigs in space by quanticle · · Score: 1

      Kinetic energy is measured as (1/2)mv^2. At orbital speed, your velocity is so high that it really doesn't matter whether you hit paper, golf balls, or stray bolts. Whatever you hit will be going fast enough to cause damage.

      --
      We all know what to do, but we don't know how to get re-elected once we have done it
    6. Re:Pigs in space by CodeMonkey4Hire · · Score: 1

      Of course it's the relative velocities that matter, so... not so much.

      --

      Let's go Hurricanes!!! 2006 Stanley Cup Champions!!!
    7. Re:Pigs in space by Rei · · Score: 1

      Orbits change.

      I'm sure that the hope here is that the smaller objects, which aren't being reboosted, will decay faster than the ISS, which has a higher mass/surface area ratio. Still, at the very least, they're adding threats to craft in lower orbits.

      --
      Anchor: "We take you now to our Chief Meteorologist, Paris Hilton." Paris: "It's hot." Anchor: "Thank you."
    8. Re:Pigs in space by Synonymous+Bosch · · Score: 1

      Next guest on the station: Whitney Houston

    9. Re:Pigs in space by PakProtector · · Score: 1
      International Space Crackhouse.
      Ground control to Major Tom....

      Lemme guess... You've got a message for the Action Man?

      --

      Edward@Tomato - /home/Edward/ man woman
      man: no entry for woman in the manual.
      "Qua!?"

  2. Randomly dump their trash would be stupid by aadvancedGIR · · Score: 3, Insightful

    and criminal.

    They could pack their trash and, with minimal thrust, send it on a quick reentry path in which it will burn in higher atmosphere a few days or weeks later. On the other hand, if they just dump things at random, they may be their own victims mounthes to years later.

    1. Re:Randomly dump their trash would be stupid by Noryungi · · Score: 4, Insightful
      They could pack their trash and, with minimal thrust, send it on a quick reentry path in which it will burn in higher atmosphere a few days or weeks later.


      Exactly, there is no reason not to incinerate their trash. I can't believe this is 2006, people have been going into space for more than 40 years now, and they still are throwing trash overboard even though they know the danger. Stupid, stupid, stupid.
      --
      The right to offend is far more important than the right not to be offended. (Rowan Atkinson)
    2. Re:Randomly dump their trash would be stupid by Vihai · · Score: 1
      They could pack their trash and, with minimal thrust, send it on a quick reentry path

      Can you quantify this "minimal thrust" ?

    3. Re:Randomly dump their trash would be stupid by lavardo · · Score: 1

      I say we just push it to Saturn or Jupiter every 3 months or something.

    4. Re:Randomly dump their trash would be stupid by Anonymous Coward · · Score: 0

      The US tracks space junk. Perhaps it's a cunning plan to make it more difficult (dangerous) for other countries to send people and satellites into space?

    5. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 4, Insightful

      They could pack their trash and, with minimal thrust, send it on a quick reentry path in which it will burn in higher atmosphere a few days or weeks later.

      Yeah, because see, all these rocket scientists, they are well known for bein' stoopid. Ain't that a shame to pollute them purty stars.

      SARCASM_MODE=OFF

      If all you needed to deorbit something thrown from the ISS was a "small amount of thrust", don't you think that atmospheric drag would have already deorbitted the ISS itself?

      In order to deorbit something, you need a very considerable amount of thrust, with an engine and propellant brought up from Earth at enormous cost. Left to its own device, a low-density object such as a bag of trash is going to slowly lose altitude due to atmospheric drag, then burn. No need for propellants. Good old air envelope does the trick.

      As for reusing it, I'm afraid that a sizeable fraction of the trash is, er, astronaut dung. I doubt the reuse value of human waste is very high in space, until we have complete hydroponic gardens.

      there is no reason not to incinerate their trash.

      Incinerate? Whaaa?? Look, this is space, ok? Having a simple combustion chamber working in space would be a major, major physics achievement. There is no convection, so flames don't behave as expected. There are whole experiments studying a simple candle flame in space.

      Never mind the fact that you'd need oxygen and fuel, brought from Earth at enormous cost, to burn wet waste.

      The only way to incinerate things in space practically would be with a electric plasma arc, which in turn would requires a really large energy input. So until the ISS flies several isotope generators, there will be no such thing.

      Remember, these decisions are made by people who actually know what's going on. The only problem is that they obviously don't communicate their reasons, since Slashdot readers -- Slashdot readers! -- feel compelled to call them stupid.

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

    6. Re:Randomly dump their trash would be stupid by aadvancedGIR · · Score: 1

      No, I can't do the math. But considering that they would only have to help gravitation instead of fighting against it, I'm still sure of my words.

      The ISS is globally on an almost stable orbit, requiring some thrust from time to time to make up for the light air friction. From that position, if you eject the trash at only a few m/s in the right direction, it will soon go down to altitudes where the air friction will be higher, be slowed down from its orbital speed and fall. Since you don't want a controled rentry, all you need is a small initial kick in the right direction to remove it from the ISS orbit and friction and gravity will then do the hard work.

    7. Re:Randomly dump their trash would be stupid by tomhudson · · Score: 1

      Having a simple combustion chamber working in space would be a major, major physics achievement.

      So the moon landings really were a hoax?

      Gee, next you'll be saying that rockets can't work in space because "there's no air for them to push against."

      And, btw, the ISS does have to be nudged on occasion, because its orbit DOES decay with time due to drag.

      A solar sail could safely deorbit junk at minimal cost.

    8. Re:Randomly dump their trash would be stupid by Aladrin · · Score: 2, Insightful

      You really shouldn't pick apart a piece of someone's text at a time. You're taking what he said out of context.

      When he said 'incinerate their trash', it sounds to me like he meant to use the atmosphere to incinerate it. No need for any equipment for that.

      As for the little thrust... A person could throw it with the hand towards the earth and have more than enough 'thrust' to 'deorbit' it. Orbit is a VERY precarious balancing act. Just a little higher or lower, faster or slower and you lose it. Throwing the trash back the way they just came from would have the same result as throwing it toward the earth: Faster re-entry.

      --
      "If you make people think they're thinking, they'll love you; But if you really make them think, they'll hate you." - DM
    9. Re:Randomly dump their trash would be stupid by SirCyn · · Score: 4, Interesting

      IANARS!
      Having an astronaut literally throw a typical size bag of trash toward the Earth would be sufficient acceleration (or deceleration depending on your point of view) to cause it to burn up within a couple weeks. And better yet it would instantly be in a non-intersecting orbit with the ISS.

      In the past they haven't done this because it will cause the ISS to be accelerated into a higher orbit. The difference would be minimal, but certainly measurable. The ISS is not very well equipped to deal with such problems (remember that it is technically falling all the time normally). Apparently NASA has decided that this effect is minimal enough that it would not be detrimental to the ISS orbit.

    10. Re:Randomly dump their trash would be stupid by Noryungi · · Score: 2, Informative
      Hmmmm... I love the smell of a flame war early in the morning...

      Yeah, because see, all these rocket scientists, they are well known for bein' stoopid. Ain't that a shame to pollute them purty stars.

      Let me help you understand what's at stake here. This quote is from the TFA, that you obviously haven't read:

      Tools and other gear have accidentally floated away during spacewalks. But NASA has shied away from intentionally jettisoning gear off the ISS in the past because of the threat of space junk hitting the station or other spacecraft. Even tiny flecks of paint have cracked the windows of the space shuttle orbiter because they zoom around Earth at thousands of kilometres per hour.

      Total cost of the ISS (so far): close to US$35 billions (source). The collective face NASA is going to make when the ISS is made unusable by some medium-sized space junk: priceless. Added points for the irony of being hit by space junk that comes from the ISS itself. So, yes, allow me to say it again: throwing junk overboard without thrusting is bad policy, and it is stupid.

      If all you needed to deorbit something thrown from the ISS was a "small amount of thrust", don't you think that atmospheric drag would have already deorbitted the ISS itself?

      Oh wait, are you talking about the same ISS that needs an extra orbital boost from time to time due to atmospheric drag? Hmmm... Interesting... That means the ISS is slowly being dragged toward the earth. Amazing, isn't it? Who would have thought?

      In order to deorbit something, you need a very considerable amount of thrust, with an engine and propellant brought up from Earth at enormous cost. Left to its own device, a low-density object such as a bag of trash is going to slowly lose altitude due to atmospheric drag, then burn. No need for propellants. Good old air envelope does the trick.

      Which, of course, is in complete contradiction with what you just wrote about the ISS, right? Oh well, what's a few inconsistencies between friends? Besides, the goal is precisely to avoid filling the Earth outer space with dangerous, slow moving bags of trash. If you had read TFA, you would know that the golf ball that was to be putted by a russian cosmonaut is no danger, precisely, because hitting that little golf ball with a gold club is enough to send into the atmosphere, where it will burn harmlessly. Which, again, completely contradicts your previous statement that it takes a lot of thrust to de-orbit trash.

      On the other hand, the real heart of the matter is, of course, that even if there is never another rocket launch, the outer space around the Earth will be filled with junk until at least 2055:

      The model predicts that even without future rocket or satellite launches, the amount of debris in low orbit around Earth will remain steady through 2055, after which it will increase.

      That was one of the the links I posted. But, let me guess: you did not read any of these either, right?

      (me)there is no reason not to incinerate their trash. Incinerate? Whaaa?? Look, this is space, ok?

      Fine, that sentence should have been: ... there is no reason not to incinerate their trash IN THE UPPER ATMOSPHERE . Happy? I may sound dumb, but I am not THAT dumb, thankyouverymuch.

      As for reusing it, I'm afraid that a sizeable fraction of the trash is, er, astronaut dung. I doubt the reuse value of human waste is very high in space, until we have complete hydroponic gardens.

      Still, there i

      --
      The right to offend is far more important than the right not to be offended. (Rowan Atkinson)
    11. Re:Randomly dump their trash would be stupid by elrous0 · · Score: 1
      March 2039, SETI receives its first alien message: "Stop sending us your damn trash! -Sincerely, The People of Alpha Centauri 4"

      -Eric

      --
      SJW: Someone who has run out of real oppression, and has to fake it.
    12. Re:Randomly dump their trash would be stupid by lazybratsche · · Score: 1

      From TFA:

      "According to the new policy, the crew would release an object on a spacewalk by pushing it "behind" the station to speed up the separation between the ISS and the object and to decrease the amount of time it spends in orbit."

      So, they're not just gonna randomly toss objects around. Instead they'll toss them into a slightly lower orbit, where atmospheric drag (which DOES exist even at the orbit of the ISS, though it's very slight) will guarantee the objects will eventually spiral in and burn up in the Earth's atmosphere.

    13. Re:Randomly dump their trash would be stupid by Apocalypse111 · · Score: 1

      Its that very gravitation that is keeping them in orbit - its not flying, its falling with style. In orbital dynamics, speed and altitude are linked. Geo-sychronous orbit is not a function of simply sitting at the same spot over a point on earth, you have to be at the right altitude for it to work. In order for you to de-orbit something, you have to apply a non-trivial amount of force in the opposite direction, causing it to slow, which will cause its orbit to decay. This force has to be some significant fraction of the speed you are currently travelling in order for the trash to de-orbit in the near future, and not decades from now. Simply leaning out an airlock and hurling it towards the planet is not enough.

      --
      There is no mod option "-1: Disagree" for a reason. "Overrated" is not an acceptable substitute. Post something instead.
    14. Re:Randomly dump their trash would be stupid by Mindwarp · · Score: 4, Informative

      Actually, no. If an astronaut were to throw a bag of trash 'downwards' towards the Earth then its orbital velocity relative to the space station would increase (since it is moving into a lower orbit) so it would start to overtake the space station below it. As the orbital velocity increases it would start to again climb to a higher orbit, passing above the space station in front of it. As it gained a higher orbit than the space station its orbital velocity relative to the ISS would drop, causing the trash to drop to a lower orbit. In summary, if you throw anything out of the ISS down towards the Earth it will in fact pull a complete loop and end up impacting the top of the ISS.

      There is only one safe direction to throw anything out of an orbiting spacecraft - backwards, in the opposite direction of your orbit. By doing this you reduce the orbital velocity of the object relative to your spacecraft thereby guaranteeing that the object will enter a lower orbit from which it is guaranteed not to climb. At this point atmospheric drag will continue to degrade the objects orbit until it eventually burns up.

      --
      The gift of death metal does not smile on the good looking.
    15. Re:Randomly dump their trash would be stupid by roystgnr · · Score: 2, Informative

      A person could throw it with the hand towards the earth and have more than enough 'thrust' to 'deorbit' it. Orbit is a VERY precarious balancing act. Just a little higher or lower, faster or slower and you lose it.

      No, you don't lose it (otherwise every little tidal perturbation would be knocking satellites from the sky), you just change it. To actually immediately leave orbit from the ISS you'd need more than 100m/s delta V, which you're not going to get from someone throwing a bag of trash by hand even if they're not in a bulky space suit.

      So the plan here isn't to throw trash out of orbit, it's to throw it into a slightly lower orbit and let atmospheric drag eventually do the rest. They seem to be relying on the fact that if the trash doesn't break into many small pieces, there's only a tiny probability of it hitting anything during the hundreds of orbits before drag finally wins. Well, best of luck to them, but I'd hate to be the decisionmaker responsible for any accidents.

    16. Re:Randomly dump their trash would be stupid by The+Mysterious+X · · Score: 1

      I believe the point he is trying to make is, in space there is no up or down. Gravity is not there to move cold air down and warm air up, so flames will... actually, I have no idea what they will do. If I had to guess, I would say that they wouldn't burn very fast at all.

    17. Re:Randomly dump their trash would be stupid by fbjon · · Score: 1

      The golfballs will be hit in that very direction, and are estimated to burn up in 3 days.

      --
      True confidence comes not from realising you are as good as your peers, but that your peers are as bad as you are.
    18. Re:Randomly dump their trash would be stupid by Aladrin · · Score: 1

      Oh, it's a horrid, horrid idea, I'll agree with you there. But I think they are thinking what you just said: Throw it into a lower orbit and let the atmosphere take over. This could obviously take quite a while if insufficient force is applied.

      --
      "If you make people think they're thinking, they'll love you; But if you really make them think, they'll hate you." - DM
    19. Re:Randomly dump their trash would be stupid by RingDev · · Score: 3, Funny

      hope he doesn't slice it!

      -Rick

      --
      "Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
    20. Re:Randomly dump their trash would be stupid by RancidBeef · · Score: 1

      Um, no, the orbit of the trash would intersect the ISS's orbit twice a day. If you toss something like that what you're doing is putting it into an eliptical orbit with a different eccentricity(*). What you're hoping for is that the perigee of the eliptical orbit of the trash is low enough that the atmospheric drag drops its speed (and it's altitude) on each pass, eventually causing it to burn up.

      (*) Yes you could put it into a *much* more eccentric orbit such that its orbit would intersect the earth itself in the first pass, but, as pointed out by another poster, that would require a considerable amount of delta-v.

    21. Re:Randomly dump their trash would be stupid by LunaticTippy · · Score: 1

      There's gravity in space. Otherwise, the space station would just shoot off away from earth, instead of orbiting it.

      --
      Man, you really need that seminar!
    22. Re:Randomly dump their trash would be stupid by nahdude812 · · Score: 1

      IANARS, but Newton tells us that giving the debris a small boost toward Earth would add the same momentum to them in the opposite direction. Meaning that this would interfere with their orbit a bit, which would have to be corrected with thrusters (though they could probably also time their debris ejection with a time that they need outward thrust to maintain their orbit anyway).

      Even still, terminal velocity would be reached on this trash before it had entered very far into the atmosphere. By Nasa's space debris FAQ page, this debris could then remain in orbit anywhere from a year to decades (depending on how much thrust they applied to it). They want to minimize the amount of debris they eject in general just because all of it is a liability until it actually descends far enough into the atmosphere to pick up enough speed and friction to burn up. Even then they record an average of one piece of debris striking terra firma every day. Most strikes the oceans or some of the wide open spaces (such as Canadian tundra), but it would not be good for someone's home to be crushed by descended orbital debris.

      Most of this info is gleaned from Nasa's space debris pages. They're a bit smarter than me =).

    23. Re:Randomly dump their trash would be stupid by InfiniteWisdom · · Score: 1

      Why do people think it's so easy to deorbit something? "Minimal thrust" will only turn it into a slightly eliptical orbit. Unless you slow it down enough that the perigee intersects the atmosphere, it's going to stay in orbit for along time.

    24. Re:Randomly dump their trash would be stupid by Ruzty · · Score: 1

      Besides, here is a proposal: human feces, like a lot of feces out there, generate methane. Why not harness that small amount of methane to propel said "dung" back into the Earth atmosphere?

      Because the methane is produced when the dung biodegrades. The microbes that perform this function are severly hampered by being frozen solid. So, unless you're proposing building a methane capture and concentration unit on the ISS as well as supplying enough O2 required for combustion of the methane, your proposal is fairly infeasible.
      -Rusty

      --
      The Master (Angelo Rossitto) in Mad Max Beyond Thunderdome, "Not shit, energy!"
    25. Re:Randomly dump their trash would be stupid by tocs · · Score: 1
      "don't you think that atmospheric drag would have already deorbitted the ISS itself?"

      The ISS is in low Earth orbit and does experience atmospheric drag. There is no reason to think trash thrown out would not de orbit in time. How much time, I do not know.

      From Wikipedia
      "The space station is located in orbit around the Earth at an altitude of approximately 360 km (220 miles), a type of orbit usually termed low Earth orbit (The actual height varies over time by several kilometres due to atmospheric drag and reboosts)."

    26. Re:Randomly dump their trash would be stupid by HTH+NE1 · · Score: 1

      You really shouldn't pick apart a piece of someone's text at a time. You're taking what he said out of context.

      Yes, leave it to the professionals: Usenetters.

      As for the little thrust... A person could throw it with the hand towards the earth and have more than enough 'thrust' to 'deorbit' it. Orbit is a VERY precarious balancing act. Just a little higher or lower, faster or slower and you lose it. Throwing the trash back the way they just came from would have the same result as throwing it toward the earth: Faster re-entry.

      Keeping in mind that if you throw mass away from the station towards Earth, you're also throwing the station a little further away from the Earth. Action, opposite reaction you see. Like throwing a basketball while standing on a skateboard.

      Trash ejection times should coincide with times you'd want to boost the station's orbit to counteract orbital drag.

      --
      Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
    27. Re:Randomly dump their trash would be stupid by Anonymous Coward · · Score: 0

      Added points for the irony of being hit by space junk that comes from the ISS itself. So, yes, allow me to say it again: throwing junk overboard without thrusting is bad policy, and it is stupid.

      How is the ISS going to be hit by something jettisoned from the ISS? Is there some magical boomerang property acquired by carrier bags full of astronaut shit that I am not aware of?

      If you're going to get all nit picky, you might do well to make sure you don't come off sounding like a retard yourself.

    28. Re:Randomly dump their trash would be stupid by Profane+MuthaFucka · · Score: 1

      Simple orbital mechanics. If you impart a momentary thrust to an object in orbit, then the new orbit will intersect the old orbit at two points. One intersection will be at the point where the thrust was imparted, and the other intersection will be at the opposite (antipodal) point in the orbit.

      What that means is that if you throw a piece of trash overboard, it's going to come back and hit you again on the other side of your orbit, at the same speed you threw it overboard.

      I mean, DUH, didn't anybody every place Space Wars here?

      If you want to put the trash into a new orbit which doesn't have any intersections with the old orbit, you're going to need at least two momentary thrusts to the trash, which means you have to waste a rocket engine and a guidance system. Maybe that could be a simple one, like a model rocket engine and spin stabilization, but you need SOMETHING else besides the initial push away from the station to avoid a possible collision.

      --
      Fascism trolls keeping me up every night. When I starts a preachin', he HITS ME WITH HIS REICH!
    29. Re:Randomly dump their trash would be stupid by camg188 · · Score: 1

      Wait a minute. What you are saying seems to defy common sense. In space, if you throw an object, it will continue in that direction until resistance is met. So, if the space station is 220 to 250 miles out in orbit and you throw or eject a package of trash toward the earth at 20 miles per hour (that seems reasonably simple). The package would travel 220 to 250 miles in 11 to 12.5 hours. It would be incinerated well before that. Am I missing something? Is there some principle of physics that would cause it's descent to slow as it's orbit decreased? It seems to me, that it would speed up if anything.

    30. Re:Randomly dump their trash would be stupid by dougmc · · Score: 1
      I can't believe this is 2006, people have been going into space for more than 40 years now, and they still are throwing trash overboard even though they know the danger. Stupid, stupid, stupid.
      It's not stupid at all.

      ISS is in a rare (unique?) position as far as satellites go -- it's very low, only about 200 miles up. At this altitude, atmosphere drag is a signifigant force, and will make sure that any trash let out of the ISS will not stay in the vicinity of the ISS for long. If you were to push a bit of trash out of the back of the ISS, there's basically zero chance that it could ever hit the ISS, as it would slowly lose altitude and eventually burn up in the atmosphere. And there's nothing below the ISS to hit except for shuttles coming up to it, and that's easily managed. (Perhaps by dumping all your trash only when over a specific area of the planet?)

      Also, relative to the ISS, any trash they do let out will have very little relative velocity. What NASA is really worried about regarding debris in space isn't a wrench hitting the ISS at 0.5 m/s -- it's a wrench (or something else) hitting the ISS at 10,000 m/s -- but that's not a concern if the wrench CAME from the ISS.

      If you ask me, dumping the trash overboard is a good idea for economic reasons -- but only because the ISS's low orbit ensures that it won't stay up for long. If we put a space station in geosychnronous or geostationary orbit, simply throwing your trash out the door would be a very poor policy -- it would stay up there with you forever.

    31. Re:Randomly dump their trash would be stupid by dougmc · · Score: 1
      (Perhaps by dumping all your trash only when over a specific area of the planet?)
      Just in case anybody gets the wrong idea from this, the trash won't *stay* over that specific area of the planet. Instead, it'll orbit along with the ISS, slowly losing altitude and drifting away (I imagine that initially it would drift behind the ISS, but as it lost altitude and fell into a lower altitude it would get ahead of the ISS.) The rate of altitude loss would vary depending on the drag and weight of each piece of trash.

      In any event, as long as the velocity and position (relative to the Earth, including altitude) of the ISS is approximately the same at each trash dump, the trash would take similar paths down, and NASA could easily calculate this path and keep track of it. (And for the larger bits of trash, NORAD could track them via RADAR.) There would be an ever increasing error in the paths of their calculcated (not measured) paths of trash, but I imagine they could be accurate enough to be able to launch the shuttle to avoid possible (but incredibly unlikely) collisions.

    32. Re:Randomly dump their trash would be stupid by roseblood · · Score: 1

      The parent poster obviously has read some Larry Niven (The Smokering perhaps?)

      Down is faster. Up is slower. Forward is up. Backwards is down.

      --
      There are lies, damned lies, and statistics.
    33. Re:Randomly dump their trash would be stupid by drinkypoo · · Score: 2, Interesting
      In order to deorbit something, you need a very considerable amount of thrust, with an engine and propellant brought up from Earth at enormous cost.

      Actually, all you need is a ribbon.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    34. Re:Randomly dump their trash would be stupid by roystgnr · · Score: 3, Interesting

      Wait a minute. What you are saying seems to defy common sense.

      Yup, orbital mechanics will do that. It starts with "if you want to go faster, slow down" and just gets weirder from there.

      In space, if you throw an object, it will continue in that direction until resistance is met.

      Only if its orbital velocity is negligable compared to the velocity you throw it at; otherwise it's direction will change constantly under the influence of gravity.

      So, if the space station is 220 to 250 miles out in orbit and you throw or eject a package of trash toward the earth at 20 miles per hour (that seems reasonably simple). The package would travel 220 to 250 miles in 11 to 12.5 hours. It would be incinerated well before that. Am I missing something? Is there some principle of physics that would cause it's descent to slow as it's orbit decreased? It seems to me, that it would speed up if anything.

      If you throw your trash toward the Earth at 20 miles per hour, the trash won't be moving at 20 miles per hour, it will still be moving at approximately 11,000 miles per hour; its velocity will just have changed direction by about a tenth of a degree. Its new orbit will now be slightly elliptical, but it still won't be elliptical enough to intersect thick atmosphere.

      You're right that the trash will speed up as it gets closer to Earth... and as it speeds up, the centrifugal force required to keep it moving closer to Earth increases, gravity can't keep up, and the trash moves outwards again.

    35. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 1

      The ISS is in low Earth orbit and does experience atmospheric drag. There is no reason to think trash thrown out would not de orbit in time. How much time, I do not know.

      We agree. The atmospheric drag is very perceptible at this LEO altitude. Hence, low density packages expelled from the ISS will eventually drop and burn. But it will take time: the delta-V is not THAT small.

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

    36. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 1

      A person could throw it with the hand towards the earth and have more than enough 'thrust' to 'deorbit' it. Orbit is a VERY precarious balancing act. Just a little higher or lower, faster or slower and you lose it.

      Aladrin,

      Deorbiting almost always means "leaving orbit and reaching the surface". That's not the same as "changing orbit". You are right when you say an orbit is precarious: by definition, a few more meters per second will give you a slighly different orbit, with differences accumulating quickly as time passes.

      To leave the ISS orbit and return to Earth, you need a delta-V of several kilometer/second. In practice, once you reach a low enough orbit, atmo drag will quickly brake you, so you "only" need to produce a delta-V of a few hundreds to a few thousands meter/second to reach such a low altitude. That's what deorbiting means.

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

    37. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 1

      A rocket is not a closed combustion chamber. You are not trying to burn wet waste in an oven, you are generating hot gases -- by burning some hypergolic mix or some solid propellant. Different things.

      Amazingly little is known about how a standing fire (as opposed to a burning jet of gases) behaves in low gravity. See for example http://microgravity.grc.nasa.gov/fcarchive/combust ion/papers/Sacksteder/Solid_Surface_Combustion.htm . Thus, any process requiring a standing fire in low grav is not a practical method (yet). And of course, you don't want to waste fuel on burning waste.

      A solar sail could safely deorbit junk at minimal cost.

      Or you could just leave it float around until it drags down to a low orbit... Not sure about the low cost. Solar sails are still highly experimental.

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

    38. Re:Randomly dump their trash would be stupid by BigJavaGeek · · Score: 1

      You are correct that a momentary impulse tangential to orbit (which this ejection almost certainly would not be) will result in an orbit that intersects the original, but there are two reasons the trash would not a problem. One is that while the orbits could intersect, two objects can be in precisely the same orbit and NEVER collide. They don't have to return to the same points at the same time. The main reason is that the trash would likely be ejected opposite the direction of travel. This results in an elliptical orbit, with the apogee being along the orbit of the ISS (assuming circular orbit), but the rest of the trash orbit inside that of the ISS. However, that point of intersection would recess (or precess, can't remember, but importantly, not be coincident with the ISS orbit) behind the ISS each subsequent orbit, and the uncorrected loss of velocity due to drag would eventually result in the trash being consumed upon reentry. Let's assume intentional trash ejections would only contain items that stood no chance of reaching the surface.

    39. Re:Randomly dump their trash would be stupid by 4D6963 · · Score: 1

      By doing this you reduce the orbital velocity of the object relative to your spacecraft thereby guaranteeing that the object will enter a lower orbit from which it is guaranteed not to climb.

      Well, if we make abstraction of atmospheric drag (so we're talking about the short term, the first few orbits), it will come back right where you threw it, no matter in what direction you throw it, unless you threw it fast enough backwards (or even downwards, but I think it'd take a greater speed, not sure) so that it entered atmosphere and burnt the first time.

      Anyways what I'm saying is that it won't really "enter a lower orbit from which it will not climb back", it will only, provided that we consider we're on a non-excentric orbit, lower the perigee, while the apogee will remain the same, in other words, the altitude of the ISS. I think however (but am not sure) that if you did that the litter would perform its revolutions around earth quicker than you and that thus you would avoid hitting it, as you might hit it if you throw downwards as it should have the same revolution period as you, not sure, one would have to check.

      But like I said, if you don't throw it very fast, you might as well not throw it at all and just wait for atmospheric drag to do its job while you (in the ISS) would regularly thrust yourself in order to compensate the drag.

      --
      You just got troll'd!
    40. Re:Randomly dump their trash would be stupid by Anonymous Coward · · Score: 0

      why make things more complicated than need be? just hurl it towards the sun!

    41. Re:Randomly dump their trash would be stupid by Anonymous Coward · · Score: 0

      Maybe they could use that astronaut dung as mass to help sling them into a higher orbit... since KE=1/2 MV^2, that means that you could get some use out of it. Then again, it might just be a crappy idea.

    42. Re:Randomly dump their trash would be stupid by snarkth · · Score: 1

      > The only way to incinerate things in space practically would be with a electric plasma arc

        Why not a solar collecting mirror? Just eject the trash thru the focus at low velocity. A mirror could be just cheap foil and framework, too.

        snark

    43. Re:Randomly dump their trash would be stupid by noigmn · · Score: 1

      Reference frames my friend... The space station is effectively in freefall toward the Earth, so is everything on it. ie. This makes it a gravity free environment.

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    44. Re:Randomly dump their trash would be stupid by HeadlessNotAHorseman · · Score: 0

      I'm no rocket scientist, but I am wondering: Can the astronauts toss rubbish on a sideways/backwards diagonal? If you apply minimal thrust, then it is still going to be moving "forward", but it will be going slower than the ISS and on a slightly different angle. Then, even if by some odd chance it did hit the ISS at a later time, it wouldn't have a head-on collision, it would just glance off the side at an angle. To avoid sending the ISS off sideways, you could divide the rubbish in half, and send half the mass to the left and backwards, and half the mass to the right and backwards.

      I am assuming that this idea is not plausible because nobody else is mentioning it, but I'm curious to learn why. H.

      --
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    45. Re:Randomly dump their trash would be stupid by thedeviluknow · · Score: 1

      Not a grav free environment simply one in free-fall, though it makes little difference the physics are close enough

    46. Re:Randomly dump their trash would be stupid by thedeviluknow · · Score: 1

      Yeah a solar sail, nothing like a large disk of whatever accelerating tonnes of waste with mNewtons of force for weeks on end to remove the danger to other spacecraft. when there's much less danger to just leave it there and let it's orbit decay naturally through drag.

    47. Re:Randomly dump their trash would be stupid by flynns · · Score: 1

      At Eglin Air Force Base, on test range C6, there is a radar that tracks everything it can see in the air, well into space. Everything bigger than a shotgun shell is tagged, registered and tracked.

      There's a few more of these radars throughout the world, but range C6 is the one I know about. :)

      --
      'If you're flammable and have legs, you are never blocking a fire exit.'
    48. Re:Randomly dump their trash would be stupid by Anonymous Coward · · Score: 0

      How about throwing it at about 100 m/s or so behind you in your orbit? That should end up intersecting the atmosphere, and as an added bonus will boost the orbit of the ISS (or whatever spacecraft we are talking about) against atmospheric drag itself.

      100 m/s would be out of reach for an astronaut to throw, but it shouldn't be too difficult to design something to jettison trash at that speed.

    49. Re:Randomly dump their trash would be stupid by tomhudson · · Score: 1

      1. You didn't say a "closed combustion chamber" You said "combustion chamber" - and those are definitely available and work in space.
      2. As for "Amazingly little is known about how a standing fire (as opposed to a burning jet of gases) behaves in low gravity.", not all that much is known about a candle flame on earth, either, despite several millennia of experience. Buckyballs were only discovered in 1985, and it was only years later that people figured out that candle flames produced them naturally.
      3. Re: cost of solar sail - anything that adds to drag by reflecting sunlight would work. How about packaging material - mylar was used for echostar ... turn it into one of those micro-experiments by asking students to design a system that weighs under 100 g and can de-orbit 1 kg.
    50. Re:Randomly dump their trash would be stupid by tomhudson · · Score: 1

      You seem to forget that this is an ideal way to experiment with micro-payloads, autonomous spacecraft, etc., as well as slove the garbage problem. Also, if it works, you're tracking fewer garbage payloads, for less time before they fall out of orbit.

    51. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 1

      Why not a solar collecting mirror? Just eject the trash thru the focus at low velocity. A mirror could be just cheap foil and framework, too.

      That would most certainly be a good source of heat. Using it would be more like burning one batch at a time rather than flying the trash through the focus, though.

      Now, I don't think that full-size a solar oven was ever flown in a mission. Any high-temp source would need a lot of controls and safety measures. Physics says it can be done, but the engineering problems are yet to be solved. There are solar ovens on Earth, but they use materials and systems that are too heavy to be flown.

      So if you want an engineering challenge to keep you busy, you got it: how to fly a ton of refractory bricks on a 100-kg payload budget. :-)

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

    52. Re:Randomly dump their trash would be stupid by noigmn · · Score: 1

      Okay, an environment where things experience weightlessness. Or do not 'feel' the effects of gravity. You know what I meant. :)

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    53. Re:Randomly dump their trash would be stupid by snarkth · · Score: 1

      I assumed that burnable trash could be fairly easily shredded, and you push it thru the focus in a small steady stream. One ould have multiple mirrors, of course, perhaps some way (centrifuge?) on the path of seperating burned and unburned bits. Electromagnetic and electrical fields for seperating other things. Yeah, it's an interesting engineering problem, but I wouldn't think it'd be that difficult.

        What would you need refractory bricks for? You have a solar mirror composed of foil on a form, and the focus is free-floating; just push the trash thru the focus and collect the particles that come out the other side, no need for any enclosure of any sort if you can generate really high temps - and you can, you can build the mirror pretty much as big as you like.

        If you really do need to enclose it, reflective foil with lightweight insulation backing (aerogel?) would likely work just fine. Remember, your heat losses to a vacuum environment are much lower than your heat losses to air or thru a massive oven - little material convection, just emr.

        We're substituting concentrated sunlight for enclosed heat, here. The mirror comes as a folded foil-and thin-strut package, shouldn't weigh much even for large ones. Then you have some sort of shredding device, which could be solar or hand powered, with a small electric motor or hand drive crank which operates a squirrel cage style fan blade assembly to push your debris down the tube and into the focus. The shredder ought to be relatively uncomplicated, you can freeze-dry your burnables pretty quick just by exposing them to vacuum.

        Metallics and synthetics would of course be a bit more of a problem, But since they constitute for the most part reusable materials, you should hang on to them anyway. Put them in tight mesh bags and distribute them around the living quarters for radiation shielding, or something ;-)

        I haven't done any math yet, but I'd imagine a 10 meter or so diameter mirror could probably provide a 600F-700F six inch wide or so focus point; that ought to incinerate most organics or bulk waste. Note that this is just a guess based off experiments I did with telescope mirrors years ago.

        Brainstorming is fun, tho. I'm willing to bet someone smarter than me could design a trash incineration system like this with no moving parts whatsoever ;-)

        Oh, and eventually trash incineration gets integrated into resource recovery, and becomes but a side effect of your machine shop *grin* except that the only thing you are shredding is documents, as all bulk organics go back into the hydro module...

        snarkth

    54. Re:Randomly dump their trash would be stupid by SysKoll · · Score: 1

      It's an interesting idea, and of course, many writers anticipated that solar mirrors could be used in space or on the moon for smeltering ore and do high-temp chemistry in general. See the "High Justice" novel for example. I'm not sure about free-standing focus as a hot zone, though that's interesting. It's definitely something hairy enough to keep a bunch of enginners working overtime for a few years, for nothing is simple in space. But as long as it doesn't contradict physics and there is a need, there is a way!

      --

      --
      Mad science! Robots! Underwear! Cute girls! Full comic online! http://www.girlgeniusonline.com/

  3. Method of keeping altitude by Frans+Faase · · Score: 4, Insightful

    What about installing a device to eject garbage in the direction of the earth, so that they will be burned in the atmosphere as this would also help the ISS to maintain altitude. I realize that the effect would be minimal, but yet all small things might help. Anyway ejecting materials towards is always better than just let them float away.

    1. Re:Method of keeping altitude by Agent00Wang · · Score: 1

      I like this idea. Hell, even throwing the trash in the direction of the Earth on a space walk would be better than just letting it float away, and would also provide the altitude boost you suggested.

      --
      NINJA SPIRIT - The Ancient Art of Insanity
    2. Re:Method of keeping altitude by aadvancedGIR · · Score: 1

      There may be a few technical issues to solve (and it may not be optimal), but it really seem to be a good way to recycle junk into propelant, which is always a scarce resource in space flight.

      The problem is that if you simply pack your trash and eject it at high speed to get your thrust, you can only do that in some directions where there is nothing you might destroy, but fortunately, from the relatively low altitude of the ISS, the downward direction is cleared most of the time.

    3. Re:Method of keeping altitude by Vihai · · Score: 1
      What about installing a device to eject garbage in the direction of the earth, so that they will be burned in the atmosphere as this would also help the ISS to maintain altitude. I realize that the effect would be minimal, but yet all small things might help. Anyway ejecting materials towards is always better than just let them float away.

      If you throw thrash in the direction of the earth, it will come back and hit at the very same speed it was ejected and you will not gain altitude, you will just make your orbit more elliptical :)

    4. Re:Method of keeping altitude by MindStalker · · Score: 1

      WTF are you smoking? Please explain, yes, if it was thrown downwards with minimal velocity there is a chance the craft might hit it on the next orbit. Though of course that is assuming an exact circular orbit, most orbits spiral around the earth and don't cross the same path twice.

    5. Re:Method of keeping altitude by Calinous · · Score: 1

      Very true. You need to throw it "back" - this way, it will have a lower speed, and will take a lower orbit.

    6. Re:Method of keeping altitude by Calinous · · Score: 1

      If you throw something "down" when you are in orbit, that something will have the same speed as the space station. As a result, it will take a similar trajectory. Even better - if you throw something down, its speed will increase - so, it will have a trajectory higher than the space station. If you throw it directly down, the trajectories will intersect (maybe not at the same time, so no crash) as the junk will take its higher trajectory.

    7. Re:Method of keeping altitude by elvum · · Score: 4, Insightful

      The ISS needs boosting into a higher orbit periodically to avoid burning up anyway, so any rubbish they eject will burn up eventually. Ejecting rubbish in the direction of earth wouldn't help though - read up on the counter-intuitive nature of orbital mechanics :-)

    8. Re:Method of keeping altitude by PFI_Optix · · Score: 1

      Or perhaps sealing it in small spherical packages and hitting it with a stick. Like a golf club maybe.

      --
      120 characters for a sig? That's bloody useless.
    9. Re:Method of keeping altitude by magarity · · Score: 1

      even throwing the trash in the direction of the Earth
       
      You don't throw something toward the Earth to get it to go down from orbit unless you have an extremely strong firing mechanism. The correct method is to throw it directly behind the ISS. Then it will be moving too slow for that orbital height. That's how to make things fall from orbit.

    10. Re:Method of keeping altitude by Profane+MuthaFucka · · Score: 1

      It'll be more eccentric of an orbit, and will hit the station. No matter how you slice it, imparting a force to an object in orbit results in a new orbit which has two coincidental nodes with the old orbit. Even if you throw it backwards.

      --
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    11. Re:Method of keeping altitude by Guysmiley777 · · Score: 1

      Orbital mechanics 101: If you "throw" something from a given orbit towards the object it is orbiting, you are just changing the orbital altitude. Distance will decrease but orbital period also decreases, thus it stays in orbit. To get an object to "de-orbit" you would need to throw it backwards (that is in the opposite direction of travel).

      --
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    12. Re:Method of keeping altitude by 4D6963 · · Score: 1

      Ejecting rubbish in the direction of earth wouldn't help though

      Well it would make your orbit more excentric (or less, in particular cases), but if you do the same thing backwards, and if you can throw your litter fast enough and that you have enough of it, you could use that to avoid having to have to use any boosting in order to compensate atmospheric drag, in other words, you could do with a litter catapult what you do with the ISS's thrust.

      --
      You just got troll'd!
    13. Re:Method of keeping altitude by Announcer · · Score: 1

      This would seem to be a valid approach... some kind of magnetically-powered "cannon" device to fire the trash out of the station at the proper angle & velocity to ensure that it reenters the atmosphere correctly for burn-up. The action/reaction principle can also be applied here- such that the best compromise between the trash's exit trajectory and the kinectic "kick" given to the ISS works best for both. Each trash ejection nudges the ISS' orbit higher by a predetermined amount. As others have suggested, this could reduce the number of orbital boosts it needs.

      Inside the station, trash is placed into a special container (rigid plastic, thin metal, whatever) and placed into the airlocked "cannon". The air is pumped out, the hatch opened, and the firing sequence is handled by a computer program. Based on the mass of the trash, it calculates the angle & speed, then fires. Rocket Scientists should have little problem coming up with something like this.

      --
      Willie...
    14. Re:Method of keeping altitude by pipingguy · · Score: 1

      Give known spammers free trips to orbit and then tell them their first job is to toss the garbage towards the earth while connected to an untethered line.

  4. I'd sell the trash... by Takuryu · · Score: 4, Insightful

    ... after all, one man's trash is another man's treasure (if you believe that saying). I know of a number of people who would pay what I consider to be a fair sum of money just to own something that had been _in space_.

    Joking aside, how hard would it be to double-bag a few trash bags and keep the trash outside until a convenient "recovery" mission could come around?

    1. Re:I'd sell the trash... by arootbeer · · Score: 1
      ...to double-bag a few trash bags and keep the trash outside...
      Stupid space raccoons! I hate them so much!
    2. Re:I'd sell the trash... by ergo98 · · Score: 1
      I know of a number of people who would pay what I consider to be a fair sum of money just to own something that had been _in space_.

      Which is kind of weird given that every atom in your body, in the desk and air and plants around you, came from space, traveling enormous distances at colossal speeds, over the history of the universe, to form the tiniest portion of a chunk of feces or a keyboard key used to write a spam message, or whatever.
  5. They stopped trashing space before? by Anonymous Coward · · Score: 1, Insightful

    Wait, when did they stop throwing trash into space to begin with?

  6. one sided?? by phelix_da_kat · · Score: 1

    Just my 2 cents.. Ok, first the Russians send tourists in to space.. and now do ads/stunts that may have an impact on the ISS? I know it is done on "their time" but doesn't this still impact you other members of the international crew? Its one small step towards all out anarchy!

  7. Sensible idea by Vadim+Makarov · · Score: 1

    If you know what happens to the jettisoned object, it's a fine policy. I understand that, after being pushed in the back direction from the station (i.e. behind it in the orbit), junk gets slowed down by whatever thin extent of athmosphere is at this attitude, and burns up in the atmosphere un a matter of days or weeks. The article also says that larger and denser objects may take longer before burn up, but they can be tracked by the ground stations (do they use radars?). If this outcome can be made predictable and the range of possible orbits before burn up is known, there is no problem then.

    --
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    1. Re:Sensible idea by aadvancedGIR · · Score: 2, Interesting

      while reading your post, the fortune cooky just above was "Sodd's Second Law: Sooner or later, the worst possible set of circumstances is bound to occur.", right on topic, I would say.

  8. Why doesn't ISS have an extensible trash module? by Morgaine · · Score: 5, Interesting

    Quite apart from the obvious dangers involved in dumping trash into orbit ...

    ISS trash isn't actually trash --- it's extremely valuable material (and mass) that has been boosted into LEO at very high cost.

    They should attach an extensible trash module to the ISS, and place all their "trash" (which simply means stuff that they cannot currently use) into the containers through appropriate hatches.

    (And I bet space contractors would love to bid for such a project too.)

    Not only would you reduce the risk to future flights this way, but you would also provide useful materials for the future. *AND* you'd be seen to be environmentally sensitive, which is no bad thing.

    --
    "The question of whether machines can think is no more interesting than [] whether submarines can swim" - Dijkstra
  9. Reminds me of an anime... by Ekhymosis · · Score: 1, Insightful

    There was this anime (PlanetES) where space trash caused a horrible shuttle accident resulting in everyone dying. While it is an anime, I wonder if it could become true sometime in the future with all the crap left over floating in space, what are the possibilities of, say, a screw flying into a sensitive part of the rocket or cracking a window, etc?

    --
    Fighting over religion is like seeing whose imaginary friend is best.
    1. Re:Reminds me of an anime... by Bill+Wong · · Score: 1

      Uh, the accident didn't actually kill everyone on the ship. Yuri Mihairokoh, one of the main characters, was on that space ship and survives the accident. His wife dies however and this is part of the reason why he starts collecting space debris -- in order to locate his wife's compass-pendant, which he does, later in the anime. I believe it's also roughly the same in the manga too. Did you actually pay any attention when you were watching Planetes? You should watch it over again...

    2. Re:Reminds me of an anime... by Silver+Sloth · · Score: 1

      The odd bits of garbage thrown overboard are a minimal risk compared to the number of satalites we have up there. I know space is *BIG* but the number of satalites is large and increasing.

      --
      init 11 - for when you need that edge.
    3. Re:Reminds me of an anime... by Ekhymosis · · Score: 1

      My point wasn't whether there were survivors or not, nor the story, but the actual problem with the space debris/trash and future space travel. It might be a real problem sometime in the future, or it might not since we don't have information on space trash and space travel just yet.

      --
      Fighting over religion is like seeing whose imaginary friend is best.
    4. Re:Reminds me of an anime... by Jarlsberg · · Score: 1

      The thing about satellites is that their position and orbit is known, while most of the garbage is impossible to track.

  10. In other news by Der+PC · · Score: 1

    ISS observation deck window smashed when a frozen Hulk Grogan jettisoned from the ISS a few months earlier caught up with the ISS and smashed through the observation window. Leaves three astronauts severely smelly and in lack of air.

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    1. Re:In other news by karnal · · Score: 1

      Leaves three astronauts severely smelly and in lack of air.

      If there's no air, are they still smelly?

      --
      Karnal
  11. How about a space catapult/ballista by spineboy · · Score: 1

    That would give a decent velocity to aim the stuff at earth so that it would burn up, and hopefully not end up in a high elliptical orbit.
    Plus it's re-usable and it's kind of cool.

    --
    ..........FULL STOP.
  12. Futurama already did it by Anonymous Coward · · Score: 0

    Futurama's prediction is coming coming true, it didn't work out so well for them..

    http://www.tv.com/futurama/a-big-piece-of-garbage/ episode/1541/summary.html

    EDIT: My image verification for this post is 'brothel'....

  13. Obvious joke by Tim_UWA · · Score: 1

    What if the second garbage ball returns to Earth like the first one did?
    Who cares? That won't be for hundreds of years.
    Exactly! It's none of our concern.

    1. Re:Obvious joke by GDI+Lord · · Score: 1


      Good news, everyone!

      --
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  14. Re:Why doesn't ISS have an extensible trash module by Rob+T+Firefly · · Score: 1

    Good point, considering how much useful stuff is regularly acquired and recycled from plain old Earth dumpsters.

  15. As long as they make sure it is safe... by JensR · · Score: 1

    I mean, if they make sure that they pack everything safely together so that it doesn't generate small particles, and if they give it a push towards earth I don't see a problem.
    By the way, I was wondering if it is possible to use a big bag of foam or gel, to sweep up small pieces of debris that could damage satellites or space stations.

  16. Re:Why doesn't ISS have an extensible trash module by $RANDOMLUSER · · Score: 1

    > ISS trash isn't actually trash --- it's extremely valuable material (and mass) that has been boosted into LEO at very high cost.

    Unfortunately, most of it has been processed through astronaut intestines.

    --
    No folly is more costly than the folly of intolerant idealism. - Winston Churchill
  17. Won't it just fall down and burn? by Bromskloss · · Score: 1

    Just as I thought the station itself would if they didn't boost the altitude from time to time.

    --
    Swedish plasma phys. PhD student; MSc EE; knows maths, programming, electronics; finance interest; seeks opportunities
  18. Clarke, "Islands in the Sky" 1952 by dpbsmith · · Score: 3, Interesting

    Pigs. Litterbugs. Someone ought to fine them $500. What can you say?

    But... after all... one of the pivotal episodes in Arthur C. Clarke's 1952 novel "Islands in the Sky" concerns an orbital spacecraft which is alarmed by the presence of a large, unidentified spacecraft, approach closely enough to identify it, and sees that it's covered in radiation symbols. In the novel, it turns out that the AEC had, at one time, had the bright idea of disposing of radioactive waste by shooting it into space, and this is a stray canister of high-level radioactive waste. So I guess it could be worse.

    And "throwing away" (such an aptly descriptive phrase: just toss the waste a discrete distance from the dwelling) seems to be a basic part of human nature. In Owen Wister's novel, "The Virginian," set in Wyoming between 1874 and 1890, the narrator and his companions partake of "Sardines... and potted chicken, and devilled ham," and muses:

    "But portable ready-made food plays of necessity a great part in the opening of a new country. These picnic pots and cans were the first of her trophies that Civilization dropped upon Wyoming's virgin soil. The cow-boy is now gone to worlds invisible; the wind has blown away the white ashes of his camp-fires; but the empty sardine box lies rusting over the face of the Western earth."

  19. Re:Why doesn't ISS have an extensible trash module by elrous0 · · Score: 2, Funny
    It would also allow the Smithsonian to one day open a great new exhibit: "10 Years of Frozen Astronaut Shit and Piss From the ISS."

    "See honey, I *told* you astronauts ate corn!"

    -Eric

    --
    SJW: Someone who has run out of real oppression, and has to fake it.
  20. Re:Why doesn't ISS have an extensible trash module by Richard_at_work · · Score: 1

    Actually most Progress modules are used for this - they are loaded with trash before being detatched and deorbited, burning up on reentry but theres no particular reason they couldnt be placed into a parking orbit for potential future use.

  21. Re:not more pollution! by Anonymous Coward · · Score: 0

    Calm down, little buddy. The environmental impact of the material jettisoned from the ISS is minimal compared with the pollution produced by the average small American town. The "environment" is great and all, and it shouldn't be altered irresponsibly, but let's keep those knees from jerking, eh?

    Love,

    AC

  22. Interesting... by argStyopa · · Score: 1

    Interesting world where 'trash' can be defined as "stuff that we paid $10,000/lb to get up here, but we don't need anymore".

    --
    -Styopa
  23. Life imitates Anime by kunakida · · Score: 1

    The premise of Planetes (a.k.a. Trashmen in Space) is that so much garbage will be put into orbit around Earth that it becomes dangerous to space traffic and we will need a dedicated "Space Debris" division to control it.

    http://en.wikipedia.org/wiki/Planetes

    And so, it begins.

  24. Good news everyone! by OfficialReverendStev · · Score: 1

    Actually, before flinging the trash into space they created a giant trash barge. It sailed around the world for years but no country would take it. Now they're hurling the garbage into space. It might come back, but there's no need to worry about that because it wouldn't happen for another thousand years or so...

    --
    A casual stroll through the lunatic asylum shows that faith does not prove anything. - Neitzsche
  25. Re:velocity and altitude by Migraineman · · Score: 1

    In orbit, velocity and altitude are related. If you "speed up," your altitude increases; if you "slow down," your altitude decreases. That part is "math" and is not negotiable or subject to interpretation.

    If you eject some mass (tools, trash, frozen excrement, etc) in the direction opposite to your current velocity vector, you'll speed up and increase altitude, and the reaction mass will slow down, taking a lower altitude. That eliminates most of the recontact issues, and is why NASA said what they did. It may not be immediately obvious, but throwing anything "at the earth" or in any direction other than the V- direction runs the risk of recontact. If you toss something overboard in a plane perpendicular to your velocity vector, you'll maximize the recontact probability - the reaction mass will come back at you every half-orbit.

    If you eliminate the atmospheric drag and orbital perturbations, all mass ejections have a potential for recontact. Fortunately, we don't have "ideal" conditions, so we can use the atmospheric drag to our benefit (one of very few situations where it's actually a good thing) and make a system like this work. I'd much rather see the Trash Chucker 2000 used to eliminate the "waste" materials than to have to schedule an extra Progress or Shuttle mission just to go collect the garbage.

  26. Where's the HOA when you need 'em?!? by xmas2003 · · Score: 1

    Someone needs to contact the Internetional Space Station HomwOwners Association as I'm sure this is against the covenents ...

    --
    Hulk SMASH Celiac Disease
  27. Why don't they... by gawdonblue · · Score: 1

    ... just get Adam Quark to pick it up?

    Here bee, bee, bee, bee. Here bee, bee, bee, bee.

  28. For Geeks. by Deliveranc3 · · Score: 1

    "ISS in a promotional stunt for a golf company."

    Contest - Program "Canada Arm", first one to hit a ball into a stationary orbit wins!

  29. use that energy by DriveDog · · Score: 1

    Temporary satellites... connect the garbage to a conductive tether. Traveling through Earth's magnetic field, the device generates electricity. How to use it? Temporary communications, cool bright light, whatever. Just use the power. The price of the power is reduction in momentum, and eventually the whole thing falls low enough for atmospheric drag to take it down. A lot of money was spent putting energy into the stuff by orbiting it, now lets at least extract some of the energy from it.

  30. Ohh MY by DRAGONWEEZEL · · Score: 1

    I am just sitting here at work, minding my own business when all of the sudden Iced Egg-Nog Latte reaches escape velocity from my nose!

    --
    How much is your data worth? Back it up now.
    1. Re:Ohh MY by 4D6963 · · Score: 1

      I am just sitting here at work, minding my own business when all of the sudden Iced Egg-Nog Latte reaches escape velocity from my nose!

      Reminds me of an episode of CSI:Manhattan I saw recently. In it, a construction worker gets killed by catching a frozen mix of human crap and chemical products that leaked from the toilets of an airplane on the top of his head. They commented that it had happened about 24 times (or so) in 25 years, iirc. Wouldn't happen with astronaut crap because it would get burnt upon atmosphere entry.

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      You just got troll'd!
  31. Re:Why doesn't ISS have an extensible trash module by Hellkitten · · Score: 1

    Unfortunately, most of it has been processed through astronaut intestines.

    And that has it's uses too. If they ever decide to experiment with greenhouses in space (or on the moon or whatever) sterilizing that shit (pun intended) could conceivably be cheaper than bringing up dirt and fertilizer from earth. They would have to get over the psychological factor of knowing where your space tomatoes came from though, but since the water already is recycled from human "byproducs" that are already dealing with that.

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    - We are the slashdot. Resistance is futile. Prepare to be moderated -
  32. Re:Why doesn't ISS have an extensible trash module by QuickFox · · Score: 1

    "10 Years of Frozen Astronaut Shit and Piss From the ISS."

    Only the shit. The piss is recycled to become water. This is one of the less romantic aspects of humanity's great quest into space.

    --
    Terrorists can't threaten a country's freedom and democracy. Only lawmakers and voters can do that.
  33. NASA needs some one with an E-bay Account by Anon-Admin · · Score: 1

    Man, bring this stuff back down on the space shuttle and run it on ebay. I bet some one would pay for a collection of tools used on the ISS!

    They may be able to recoup some of the cost... lol

  34. Re:not more pollution! by Anonymous Coward · · Score: 0

    Right. It's really about like the waste generated by a small business like an auto shop...or maybe 3-4 American families.

    And considering that they're talking about jettisoning maybe a few hundred pounds per year, when several thousand tons of micrometeoroids enter the atmosphere and burn up each day, we're not even looking at a pitance here.

  35. great makes it easier for the aliens by Anonymous Coward · · Score: 0

    all aliens have to do now is scoop the discarded feces from orbit and extract the blood (all feces contains blood) in order to extract dna/genes. They can then clone asstronauts err speak prime-humans (specialists) and send them down in place of the real ones when the real ones return for the tenth time.

  36. This space was our space by notnAP · · Score: 1

    Why am I now filled with the un-deletable image of Spock, crying in front of flotsam?

  37. Rings around the earth by lildogie · · Score: 1

    These ISS guys, next thing you know, they'll have broken-down space shuttles cluttering up their yard.

    "There goes the neigborhood."

  38. Re:Why doesn't ISS have an extensible trash module by jbeaupre · · Score: 1

    Actually, even human waste could have value if stored properly. From adding more inertia to the station (a double edged sword) to resist orbital drag, to a mass barrier around critical components (including the astronauts) as protection from orbital debris and radiation.

    Or to put it another way, in Soviet ISS, your crap saves you.

    --
    The world is made by those who show up for the job.
  39. Re:Why doesn't ISS have an extensible trash module by 4D6963 · · Score: 1

    They should attach an extensible trash module to the ISS

    Like they're gonna spend money to launch trash containers.

    ISS trash isn't actually trash --- it's extremely valuable material (and mass) that has been boosted into LEO at very high cost.

    Every ounce you launch into orbit has a cost, and the extremely valuable materials you're talking about are not valuable anymore once they're considered trash and dumped in space. It's not because you put millions into something that it will always be worth millions, it's not by spending thousands of dollars on sending energy cereal bars to space that the resulting litter is worth anything.

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    You just got troll'd!
  40. Re:Why doesn't ISS have an extensible trash module by 4D6963 · · Score: 1

    From adding more inertia to the station (a double edged sword) to resist orbital drag

    Useless, since it would work against you when you would thrust in order to compensate atmospheric drag (not orbital drag).

    as protection from orbital debris and radiation

    Try protecting yourself from debris that go so fast that they do 10 times the damage you'd do with a bullet shot from a .357 Magnum with compressed packages of energy cereal bars and human crap, or whatever they mean by trash. Same with radiation, it would be about as helpful as unrolling rolls of toilet paper around the Space Shuttle to protect it better during atmospheric re-entry.

    By the way, were you really being serious, I mean, do you realize how ridiculous it all sounded?

    --
    You just got troll'd!
  41. Link to photo, article on what is being thrown out by cyberfringe · · Score: 1

    This article has good descriptions of the types of stuff being thrown out. Also a picure that shows just how bad the problem is. Trash is stored all over the ISS, reducing the room for real work and making non-trash hard to find! http://www.usatoday.com/tech/science/space/2006-06 -26-clutter-iss_x.htm Source: USA Today 6/27/2006 2:57 PM ET

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    There's no sense in being precise when you don't even know what you're talking about. -- John von Neumann
  42. Newton's Third Law by StikyPad · · Score: 1

    Russian cosmonaut Mikhail Tyurin is about to take a space walk where he will hit a golf ball from the ISS

    Either that, or he will hit the ISS and send himself flying. Stay tuned!

  43. just wait by treak007 · · Score: 1

    Just wait til they have commercials featuring a crying Native American in a spacesuit urging people not to liter in space.

    --
    Klingon Software is not released, it escapes, inflicting terrible damage onto the enemy as it does
  44. the exercise catapult by Anonymous Coward · · Score: 0

    The astronauts have to exercise anyway, maybe they could come up with the exercise catapult for the trash launcher. Something perhaps where they had to wind a spring or bend it or something, ye olden roman engineering deal, load up the space d00dz fertilizer and old junk and FLING!! With all the appropriate mathematical calculations, etc,of course, to make sure it heads towards a faster de-orbit.

  45. Skid marks? by Anonymous Coward · · Score: 0

    How long till Mr. Hankey leaves a skid mark on a Hubble lens?

  46. Lower Orbits by camperdave · · Score: 1

    There's nothing orbitting lower than the ISS except a few spy sats and a few ham radio sats. Oh, and of course, the shuttle. All of the important birds are in higher orbits. Thus spake The Internet

    --
    When our name is on the back of your car, we're behind you all the way!
  47. Delta V by camperdave · · Score: 1

    Well, don't forget that you're in orbit. The ISS, and therefore the waste, is travelling at 7.7 kilometers per second, and you're throwing it at a mere 0.009 km/s. Let's assume that the ISS takes two hours to make one orbit. Also, let's assume that when you throw the waste directly at the Earth, coincidentally you are throwing it in the direction of Betelgeuse. Now, the 0.009 km/s is not going to change the orbit that much, so in half an hour the trash is a quarter of the way around the Earth, and your toss (although still towards Betelgeuse) is now parallel to the surface of the Earth, and increasing the orbital velocity. Half an hour later, the direction of your toss, while still towards Betelgeuse, is now pointing away from the Earth, and back towards the ISS. Essentially, this will cancel out most of the Earthward travel you gained in the first place. By the third half hour, your toss (still heading towards Betelgeuse) is now heading backwards along the orbital path, cancelling out the gains of an hour ago. By the time you've gone one orbit, all of the effects of your toss have basically cancelled each other out.

    Basically, if you start with a circular orbit, and add a small velocity, you wind up with a slightly elliptical orbit.

    Although you are correct that a smaller orbit means a faster orbit, the bit that you're missing is that a smaller orbit also means dipping lower into the atmosphere (it may be practically a vacuum at the ISS's orbit, but it is still there.) and thus increasing the atmospheric drag. Eventually the atmospheric drag saps the trash's momentum, and it deorbits.

    --
    When our name is on the back of your car, we're behind you all the way!
  48. another implication by rkoot · · Score: 1

    if we throw junk into space, won't there be the possiblity we infect other planets?
    I know it's very hard to escape the gravitational pull of the earth and even harder to escape the solar system, but what would happen when some extremophiles get a lift on our junk and plunge in some planet ?
    a few later we'll send some beagle to the place and whaddayaknow... it'll find life :)

  49. Re:not more pollution! by SkunkPussy · · Score: 1

    So concern about pollution is now considered trolling?

    fuck you america

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    SURELY NOT!!!!!
  50. Re:Why doesn't ISS have an extensible trash module by jbeaupre · · Score: 1

    Yes, I was serious. But it's so ridiculous sounding, it'll never be done. There have been proposals to build refuge modules to use as a bunker in the even of solar storms or potential debris fields hitting the station. For high velocity debris, loose stuff like trash works very well. Similar effect to the thin bumpers used on the outside. For radiation, the proposal is to use water or plastic (organic molecules). Seems that sewage would fit the bill there too. All it takes is a "can within a can" design. Disgusting, but beneficial.

    As far as dealing with atmospheric drag, you were pointing out the down side of what I meant by the double edged sword. But the up side is to increase the time between boosts. Theoretically that shouldn't be needed. Pessimistically, it is. With the space shuttle being retired, there goes a boost method. It wouldn't take many snafus before you'd start missing a timely boost. Is the extra mass of fuel for a boost worth it? Maybe, maybe not. But if that mass is useful in other ways, maybe.

    But mostly it's just funny to think of using human waste as something functional. Chill out and laugh.

    --
    The world is made by those who show up for the job.